Why did the sexually reproducing fish do better against the parasites before the drought?

Why did the sexually reproducing fish do better against the parasites before the drought?

Vrijenhoek found that the genetic diversity produced by sexual reproduction allowed the sexual fish to survive a parasite more successfully than the asexual fish.

Which of the following is a reason why sexually reproducing species have a select advantage over asexually reproducing species when influenced by natural selection?

(1) sexual reproduction functions to purge deleterious mutations, and (2) sexual reproduction generates genetic variation that is favored by natural selection. a population of asexual organisms, in which deleterious mutations occur, but back mutations—mutations from deleterious to wild type—do not.

How are the sexually reproducing minnows like a moving target for the bacteria?

How are the sexually-reproducing minnows like a “moving target” for the bacteria? Sexual fish are each unique and individual, so each one is different. Each asexual fish is the same, so it’s just one target. Why did the sexually-reproducing fish suddenly become more susceptible to disease following the severe drought?

Which of the following is considered to be the key feature that explains why sexual reproduction is so common in multicellular organisms?

Considered to be the key feature that explains why sexual reproduction is so common in multicellular organisms? Sexual reproduction results in greater genetic diversity among offspring than asexual reproduction does.

What happened to the sexually reproducing minnows in the top pool that made them more susceptible to the black spot parasite?

Why? Drought dried up the pool and killed the minnows and eventually the water returned and so did the minnows; now the parasites were decimated the sexual fish and the asexual were doing well..

What is the Red Queen theory of evolution?

The Red Queen hypothesis was coined in evolutionary biology to explain that a species must adapt and evolve not just for reproductive advantage, but also for survival because competing organisms also are evolving. …

Why do sexually reproducing animals have fewer offspring than asexually reproducing?

During sexual reproduction, the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents. Only half the population (females) can produce the offspring, so fewer offspring will be produced when compared to asexual reproduction.

Why is a species that reproduces sexually more likely to survive a sudden change in environment than a species which reproduces asexually?

During sexual reproduction the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents. The genetic diversity of sexually produced offspring is thought to give species a better chance of surviving in an unpredictable or changing environment.

What percent of the minnow population was affected with black spots disease?

Early on Vrijenhoek discovered that 40 percent of all minnows were infected with a parasite that causes black spot disease. Upon closer investigation, he observed an interesting pattern—most of the parasitized fish were asexual reproducers.

Why does evolution favor females that are selective or choosy How do the characteristics of sperm and eggs relate to this?

Evolution must move forward in order to maintain a species. Males species tend to produce more sperm than females produce eggs. Female species tend to be more choosy with who they mate with because they want to ensure that their offspring will have good enough traits that it can survive and thrive on it’s own.